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CVE-2026-18555— Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress <= 2.15.22 - Reflected Cross-Site Scripting via 'icn' Parameter

Quick assessment

Affected
wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 插件 “Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots” 在 2.15.22 及更早的所有版本中存在反射型跨站脚本（XSS）漏洞，原因是其对 参数缺乏充分的输入清理和输出转义。这使得未经身份验证的攻击者可以通过诱骗用户执行某些操作（例如点击恶意链接），将任意 Web 脚本注入到页面中并使其执行。

CVSS 6.1 · Medium
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I. Basic Information for CVE-2026-18555

Vulnerability Information
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Vulnerability Title
Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress <= 2.15.22 - Reflected Cross-Site Scripting via 'icn' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'icn' parameter in all versions up to, and including, 2.15.22 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
wordplus Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots 0 ~ 2.15.22 -

II. Public POCs for CVE-2026-18555

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III. Intelligence Information for CVE-2026-18555

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Patches & Fixes for CVE-2026-18555 (1)

Vendor Pages for CVE-2026-18555 (1)

IV. Related Vulnerabilities

Same product: Better Messages – Chat Rooms, Group Chat, Private Messages & AI Chat Bots
Same vendor: wordplus
Same weakness: CWE-79

V. Comments for CVE-2026-18555

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